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Top Forums Shell Programming and Scripting Korn Shell Script - Getting yesterdays date Post 302140149 by manas_ranjan on Thursday 11th of October 2007 03:57:43 AM
Old 10-11-2007
first_day.sh NOV 2007
Your 1st working day of 2007/NOV is : 01-NOV-2007
first_day.sh FEB 2008
your 1st working day of 2008/FEB is : 01-FEB-2008
first_day.sh MAR 2008
your 1st working day of 2008/MAR is : 03-MAR-2008
first_day.sh OCT 2009
your 1st working day of 2009/OCT is : 01-OCT-2009

Try this one as your test, and modify as per your requirements,

#!/bin/sh
function WeekDay
{
###################################################
#Function Name WeekDay()
#Return Value will be one of the following values in WDay
#0,1,2,3,4,5,6
#0-SUNDAY
#1-MONDAY
#2-TUESDAY
#3-WEDNESDAY
#4-THURSDAY
#5-FRIDAY
#6-SATURDAY
###################################################
year=$2
month=$1
day=01
a=`expr 14 - $month`
let a=a/12
let y=year-a
ma=`expr 12 \* $a`
m=`expr $month + $ma - 2`
let y4=y/4
let y100=y/100
let y400=y/400
let m31=m*31
let m12=m31/12
add=`expr $day + $y4 + $y - $y100 + $y400 + $m12`
let wday=add%7
WDay=$wday
}

function firstDay
{
MM=$1
YYYY=$2

case "$MM" in
JAN) mm=1 ;;
FEB) mm=2 ;;
MAR) mm=3 ;;
APR) mm=4 ;;
MAY) mm=5 ;;
JUN) mm=6 ;;
JUL) mm=7 ;;
AUG) mm=8 ;;
SEP) mm=9 ;;
OCT) mm=10 ;;
NOV) mm=11 ;;
DEC) mm=12 ;;
*) echo "Wrong month specified."
exit 1 ;;
esac

WeekDay $mm $YYYY
if [ $WDay -eq 6 ] # if 01 of your month and year falls on SATURDAY then
then # 1st working day will be 03
echo " your 1st working day of $YYYY/$MM is : 03-$MM-$YYYY"
elif [ $WDay -eq 0 ] # if 01 of your month and year falls on SUNDAY then
then # 1st working day will be 02
echo " your 1st working day of $YYYY/$MM is : 02-$MM-$YYYY"
else
# Then as usual default 1st is the 1st working day
echo " your 1st working day of $YYYY/$MM is : 01-$MM-$YYYY"
fi
}

firstDay $1 $2


Last edited by manas_ranjan; 10-11-2007 at 05:50 AM..
 

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Time::CTime(3pm)					User Contributed Perl Documentation					  Time::CTime(3pm)

NAME
Time::CTime -- format times ala POSIX asctime SYNOPSIS
use Time::CTime print ctime(time); print asctime(localtime(time)); print strftime(template, localtime(time)); strftime conversions %% PERCENT %a day of the week abbr %A day of the week %b month abbr %B month %c ctime format: Sat Nov 19 21:05:57 1994 %d DD %D MM/DD/YY %e numeric day of the month %f floating point seconds (milliseconds): .314 %F floating point seconds (microseconds): .314159 %h month abbr %H hour, 24 hour clock, leading 0's) %I hour, 12 hour clock, leading 0's) %j day of the year %k hour %l hour, 12 hour clock %m month number, starting with 1, leading 0's %M minute, leading 0's %n NEWLINE %o ornate day of month -- "1st", "2nd", "25th", etc. %p AM or PM %r time format: 09:05:57 PM %R time format: 21:05 %S seconds, leading 0's %t TAB %T time format: 21:05:57 %U week number, Sunday as first day of week %v DD-Mon-Year %w day of the week, numerically, Sunday == 0 %W week number, Monday as first day of week %x date format: 11/19/94 %X time format: 21:05:57 %y year (2 digits) %Y year (4 digits) %Z timezone in ascii. eg: PST DESCRIPTION
This module provides routines to format dates. They correspond to the libc routines. &strftime() supports a pretty good set of coversions -- more than most C libraries. strftime supports a pretty good set of conversions. The POSIX module has very similar functionality. You should consider using it instead if you do not have allergic reactions to system libraries. GENESIS
Written by David Muir Sharnoff <muir@idiom.org>. The starting point for this package was a posting by Paul Foley <paul@ascent.com> LICENSE
Copyright (C) 1996-2010 David Muir Sharnoff. Copyright (C) 2011 Google, Inc. License hereby granted for anyone to use, modify or redistribute this module at their own risk. Please feed useful changes back to cpan@dave.sharnoff.org. perl v5.12.3 2011-05-12 Time::CTime(3pm)
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